Game guide · BJ-TYZ
Follow the steps for Mastermind
Begin with the basic rule, then follow the result of your action. Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. The computer chooses four positions from six colours; repeated colours are allowed.
Four positions, six colours and ten guesses, with repeated colours allowed. This is an independently coded free colour-code puzzle, not an official branded edition.
An idea for your next attempt
Begin with the basic rule, then follow the result of your action. Check guess records your attempt. Exact means correct colour and position; misplaced means correct colour in another position.
The challenge in front of you
Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. Keep the goal in mind before your next move.
Step by step
- The computer chooses four positions from six colours; repeated colours are allowed.
- Select a code position and then choose a colour. Fill all four positions.
- Check guess records your attempt. Exact means correct colour and position; misplaced means correct colour in another position.
- Each secret peg can match only one guess peg. Use the feedback to narrow the next guess.
- Find all four exact positions to win. After ten unsuccessful guesses the secret code is revealed.
How to interact with the game
Begin with the basic rule, then follow the result of your action. Tap one of four positions, then a labelled colour button. Numbers identify colours as well as the swatches. Press Check guess only when all slots are filled. Keep the goal in mind before your next move.
An example to follow
Take a moment to check the current turn. For secret 1,1,2,2 and guess 1,2,1,3, feedback is one exact and two misplaced. The extra 3 has no match.
Check this before moving on
Take a moment to check the current turn. Four misplaced matches do not mean four exact positions. Also, repeated colours must not be counted more times than they appear in the secret. Start a new round when you are ready to try again.
Further help with the game
On this page, what is the aim of Mastermind?
Deduce a hidden four-colour code within ten guesses, using exact and misplaced feedback. The game is played locally in your browser.
When I start, how do the controls work?
Tap one of four positions, then a labelled colour button. Numbers identify colours as well as the swatches. Press Check guess only when all slots are filled. The controls work with mouse or touch.
For this game, can you show an example?
For secret 1,1,2,2 and guess 1,2,1,3, feedback is one exact and two misplaced. The extra 3 has no match. You can start a new round from the game controls.
Which mistake should I avoid?
Four misplaced matches do not mean four exact positions. Also, repeated colours must not be counted more times than they appear in the secret. The controls work with mouse or touch.
When I start, what rules and limits are used here?
Four positions, six colours and ten guesses, with repeated colours allowed. This is an independently coded free colour-code puzzle, not an official branded edition. A new round resets the current game.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The game is played locally in your browser.
During a round, can the secret repeat a colour?
Yes. Any of the six colours can appear more than once. The worked example offers another way to follow the rule.
For this game, what does misplaced mean?
The guessed colour appears in the secret but not at that position, after exact matches have been accounted for. Use the labelled controls for your next action.
During a round, are colour numbers part of the rules?
They are labels for accessibility; the number and its colour refer to the same peg choice. The game is played locally in your browser.
Can I see the answer?
The answer is shown when you solve the code or use all ten guesses. A new round resets the current game.
